Scorpionfish and Rockfish, or Scorpaenidae, are often armed with toxic stingers, especially the Stonefish and Lionfish within this family.

If you are stung by these fish it's recommended to immediately soak the affected area in hot water as the toxin is heat reactive. If the individual is thought to be allergic, medical attention should be immediately sort. It's rare to die from a sting from these fish, even the most toxic, the Stonefish.

Most species are bottom-dwellers that feed on crustaceans and smaller fish. Most species inhabit shallow waters, but a few live as deep as 2,200 metres (7,200 ft). Most Scorpionfish, such as the Stonefish, wait in disguise for prey to pass them by before swallowing, while Lionfish often ambush their prey.